Did compositing in Cycles, went to eevee for the background, went back to cycles... and all my compositing had been deleted
Ok I solved it, I actually confounded the compositor tab with the shading tab. The pink color was because I had previously deleted the file of the surface of the planet. I put a newer version of the file I did on Photoshop inside the &quot;Image texture&quot; block in the shading tab and tadaa... the planet is no longer pink.